Gas-purifying apparatus.



W. SCHWARZ.

GAS PURIFYING APPARATUS.

APPLIOATION FILED ooT.16, 1912.

L0'76,458 Patented 0,@t.21,1913.

2 SHEETS-SHEET l.

W. SCHWARZ.

GAS PURIFYING APPARATUS.

APPLIOATION FILED 00T.1e, 191.2.

WLTEE SCHWARZ, .GF DQPJ'JMUND, JGrEBJlfLMY,

GAS-PRIFYING APPARATWS.

Speccation of Letters Patent.

newsreader.. si, reis.,

Apmtiml :filed voctober 1.6, i912. @ferial No., 72ti,1t3.

To all whom it may concern Be it known that ll, WALTER Schwerin, of

Dortmund, Germeny, s subject of the King of Prussia, end whose posteticeaddress is 72 Friedenstrasse, ortmund, Kingdomy of Prussia, GermanEmpire, have invented new and useful lmprovements in end Reisting toGres-Purifying Apparatus, of which the following is s specification.

The present invention relates to an appa.- ratus vfor purifyirnr lgases,in which by oentritug'ing in drums or the like, gas and e liquid, forinstance weiter ere brought into cil-ose con-tact with each other.During this process, the specifically heavier impurities of the ges,which will become still heavier by the adhering waiter, will beseparated .by the centrifugal forces produced by the rotation. A greetdifficulty which was :hitherto experienced with `appuratuis of this kindconsisted in the surfaces coming in contact with the gas, for instanceEthe venes and the like become thickly incrustated with the adniixtures,and the service of :the apparatus was thereby greatly impaired.

The apparatus 'according to the presen-t invention consists of a rotorcomposed of beaters or bers, several such rotors being ermnged in acasing in such a, manner, that.

.Y euch Acircle of beaters is followed by a circle of beaters revolvingrin the opposite sense, in such a marmer, `that the several circles ofbeet-ers are arranged within each other and each circle is of a smallerdiameter than the preceding one. By such arrangement n. revolvinggl bodyis obtained, which composed of any desirable number of beater circlesl`the number of these depending upon the quality of the gases und 'thedegree ot purity which it lis desirable to obtain.

ln .the accompanying drawing the inveirl tion is exemplified in aconsiructionsl form shown in Figures 1 to 3. In these Fig. l is u sideelevation of the apparatus, while Fig.. 2 is u plan of the sume; Fig. 3is a. section through the casing showing the rotor, drown on nn enlargedscale.y

The apparatus consists essentially of :i gais purifying chninber a,through which the gos to be purified flows from the circumferei-ieetoward the center. Within this chamber is arranged the rotor, which iscomposed or" two opposite driven disk-wheels b, c (Fig. 3), in which aresecured beaters or bars erranged in circles. For the purpose of securingthese beaters, the hitter are preferably tapered' et one lend andriveted in the corrpondingly tapered bore in the disk- Wheel. By suchmeans circles of beaters are produced which fit the one over the other.Proceeding from outside `toward the center each row of beaters has asmaller diameter than the preceding one. l

For the disk-wheels to revolve in opposite directions the one of them, bis fitted te :i solid shaft f, while the other disk-wheel is fitted tosi hollow shaft g, the said shafts bein-g passed through opposite wellsof the ges chamber a. rlhe disk-Wheels ib, c are :ifrranged et sdistance from euch other, which is somewhat larger than the length ofthe beaters el, c so tbn-.t tlf-ie alternating circles of beaters willll up the space between the said disk-Wheels. By .suitable driving meansthe one shaft is revolved in theorie, the lother in the .oppositedirection, so that the circles of beaters revolve lin oppositedirections. The 'liquid required for purifying- .the gases is injectedinto the chamber through the said hollow shaft -g which is suitablyarranged asian injection pipe. For this purpose it is provided with aplurality of orifices In, through which the liquid is injected into therevolving cage of hea-ters. Above this cage is arranged a mixing chemberlr, Figs. l and 3, in which the ges enteringA in the direction indicatedby the arrow Vin Fig. 3 will .be saturated with the `liquid dit'- fusedby the revolving cage of beaters. |The gus passes through the circles oi:beaters d and e whereupon it will escape through apertures Z in thedisk-wheels in the direction of the arrow in Fig'. 3. For sucking thegus through the apparatus n suction fain m, Fig. l, is enr ployed whichcommunicates by ineens of u chuinber or a flue 'n or the like with thesaid apertures in `the disk-wheels. rlhe 'gils is sucked by the fan und:then forced to the place of consumption. Any moisture still containedin the ges will be .seperated by the eentrifuging notion of the fen.

Dwing to the fact, that the two medie, the gas end the water how inopposite directions, they are brought into i close contact witheachother. As it will be of importance .to .accurately control thevelocity of the passage, a throttling valve o is preferably :irrzingedin the communicating chamber n, between the escape apertures in thedisk-wheels und the entrance into the fen m. This throttling valve isoperated by a lever 7), extendingr through the apparatus and oper-stablefrom outside, Fig. 2, a scale being provided according to which the areat-o which the passage 1s set may be controlled. The said lever p may bepositively coupled with a valve 1n the supply pipe g, Figs. 2 and 3, sothat when the throttle valve is closed also the water supply will be cutoif., In thef constructional form shown the lever is positively coupledto the valve s by means of a link 1'. By such arrangement the ratiobetween the gas and water will be always kept constant, as this is ofgreat importance for a proper purification.

When the throttle valve o is completely closed also the water supplywill be entirely cut off, but the entrance of the gas into the apparatuswill not have been prevented. Therefore the entrance or mixing chambertis s0 arranged, that when the water is cut off, also the gas supplywill be shut off. With this object a' trough t or the like is providedin the said entrance chamber, into which trough the gas admission tube upro jects. The injection water is conducted through a suitably disposedpipe o first into this trough. The water Hows through this trough andemerges att-he lowest point of the same, whence it is conducted byanother pipe fw to the pipe g leading into the hollow shaft. When nowthe valve s, which is positively coupled to the throttling valve o, isclosed, the discharge of the water from the troucrh will be closed, andthe water will rise 1n the latter until the tube u is so deeplysubmerged that the, gas supply is likewise cut ofi". An overflow siphonz provided at a suitable level will show by the water running from it ina reliable manner that the gas supply is shut of. By the hereinbeforedescribed arrangement the apparatus will automatically seal itselfagainst any further entrance of gas, sothat after the apparatus has beenstopped, the same may be inspected and repairs may be executed withoutany danger. In view of the highly poisonous character of the gases, inparticular of the danger inherent in furnace gases, the safety inworking with the apparatus according to the present invention is greatlyincreased. Owing to the said dangerous character of the gases it isdesirable to arrange apparatus of this kind in the open air. This,however, entails the great dis` advantage that the engines for drivingthe fan and the disk-wheels revolving in opposite directions are notsuliiciently protected.

Therefore preferably an arrangement will be employed, in which theengine producing the opposite rotation, for instance for the hollowshaft, drives a countershaft arranged outside of the premises, fromwhich countershaft then the shaft of the one side of the cage is drivenby gearing, chains or the like. The driving engine is then placed on thesame side as the other engines, so that notwithstanding the oppositesense of the alternately in opposite directions, the number of saidcircles depending upon the degree of purification to be obtained, a gaschamber behind said beater cage,a throttle valve in said gas chamber anda fan behind said gas chamber another valve in the water supply pipe,sa'd valve coupled to the said throttle valve in the gas chamber andadapted to maintain a constant ratio between the gas volume and thequantity of water injected, substantially as described.

2. In a gas purifying apparatus the combination of a gas 4purifylngchamber into which the gas flows from the circumference toward thecenter, a revoluble cage of beaters closely inclosed by the casing, thebeaters in said cage arranged in circles revolving alternately inopposite directions, a gas chamber behind said beater cage, a throttlevalve in said gas chamber and a fan behind y'said gas chamber, a mixingchamberl containing a trough into which the gas supply pipe projects andmeans for producing va Water seal'of said gas pipe in said trough whenthe water injection is shut oif, substantially as described.

In testimony whereof, I have hereunto set my hand in presence oftwosubscribing wit nesses.

WALTER SCHWARZ. [L. 5.]

Witnesses WILHELM SoMMERs, ALBERT NUFER.

